Mineral - Fergusonite-(Y)
Fergusonite-(Y)
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
radioactive
Formula
YNbO₄
Unit Cell
Physical Properties
Hardness
5.5 - 6.5
Streak
brown
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
browngrayyellow
Birefringence
Luster
Vitreous,
Metallic
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
tetragonal
Point Group
Space Group
Habit
dipyramidal, massive, acicular, prismatic
Formation
Mgmatisch, Pegmatite
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Fergusonite-(Y)